Determination of Angular-Momentum Transfers for (d, α) Reactions Using Polarized Beams

The angular distribution patterns of vector analyzing powers for ($d, \alpha$) reactions on $s-d$ shell nuclei at energies near 16.5 MeV depend distinctly on the orbital angular momentum $L$ and total angular momentum $J$ transferred. Examples of $L=0\mathrm{}$, $L=2\mathrm{}$, and $L=4\mathrm{}$ transfers have been obtained for ${}_{}{}^{28}{}_{}{}^{}\mathrm{Si}$, ${}_{}{}^{32}{}_{}{}^{}\mathrm{S}$, and ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}$ targets, and these compare well with distorted-wave calculations. These measurements provide information useful in establishing the spins and parities of the levels populated in ($d, \alpha$) reactions.